om provement upon the improved pipe tongs shown and de- valve, and the “grid” or governor valve. The main valve each pair of cylinders, which are placed side by side; the scribed in Letters Patent No. 240,067, granted to the same is the same as usually employed, and regulates the admission valves… … and steam is admitted surfaces, perfect ba- to the piston for a lancing of the revolv- ing parts, due to divid- longer portion of the stroke. The range of the cut-off is from the closest point ing the work between four steam cylinders. One of the improved means for holding the bite-block in the…
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